Source code translator

• US 20060101429A1
• Filed: 10/14/2004
• Published: 05/11/2006
• Est. Priority Date: 10/14/2004
• Status: Active Grant

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: Oracle International Corporation (Oracle Corporation)
• Inventors: McDermott, Adrian Peter, Osborne, John Alexander, Aickin, Alexander Rothschild, Mani, Raja, Miller, Jeffrey Scott, Vydra, David
• Granted Patent: US 7,770,158 B2
• Time in Patent Office: Days
• US Class Current: 717/137
• CPC Class Codes: G06F 8/51 Source to source

Abstract

A method, computer program product, and apparatus comprise providing a Java developer kit class library comprising first Java classes; providing a Java Open Foundation class library comprising second Java classes each containing one or more of the first Java classes; providing a .NET SDK class library comprising .NET classes; providing a .NET language Open Foundation class library comprising first .NET language classes each containing one or more of the NET classes; wherein each of the .NET language classes presents the same method signature as one of the second Java classes; receiving Java source code defining third Java classes, first calls to the first Java classes, and second calls to the second Java classes; translating the third Java classes into second .NET language classes; and translating the first calls to calls into the .NET SDK class library without modifying the second calls.

Claims

1. Computer-readable media embodying instructions executable by a computer to perform a method comprising:

providing a Java developer kit class library comprising a plurality of first Java classes;

providing a Java Open Foundation class library comprising a plurality of second Java classes each containing one or more of the first Java classes;

providing a .NET software developer kit class library comprising a plurality of .NET classes;

providing a .NET language Open Foundation class library comprising a plurality of first .NET language classes each containing one or more of the .NET classes;

wherein each of the .NET language classes presents the same method signature as one of the second Java classes;

receiving Java source code defining third Java classes, one or more first calls to one or more of the first Java classes, and one or more second calls to one or more of the second Java classes;

translating the third Java classes into second .NET language classes; and

translating the first calls to calls into the .NET software developer kit class library without modifying the second calls.

2. The media of claim 1, wherein the first and second .NET languages are selected from the group consisting of:

C#;

C++; and

VB.NET.

3. The media of claim 1, wherein the method further comprises:

generating Microsoft Intermediate Language based on the second .NET language classes, the calls to the .NET software developer kit class library, the second calls, the .NET language Open Foundation class library, and the .NET software developer kit class library.

4. The media of claim 1, wherein the method further comprises:

generating Java bytecode based on the Java source code, the Java Open Foundation class library, and the Java developer kit class library; and

wherein the third Java classes are translated to the second .NET language classes based on the Java bytecode.

5. The media of claim 1, wherein the first calls comprise calls to at least one of the group consisting of:

object classes;

exception classes; and

string classes.

6. A method comprising:

providing a Java developer kit class library comprising a plurality of first Java classes;

providing a Java Open Foundation class library comprising a plurality of second Java classes each containing one or more of the first Java classes;

providing a .NET software developer kit class library comprising a plurality of .NET classes;

providing a .NET language Open Foundation class library comprising a plurality of first .NET language classes each containing one or more of the .NET classes;

wherein each of the .NET language classes presents the same method signature as one of the second Java classes;

receiving Java source code defining third Java classes, one or more first calls to one or more of the first Java classes, and one or more second calls to one or more of the second Java classes;

translating the third Java classes into second .NET language classes; and

translating the first calls to calls into the .NET software developer kit class library without modifying the second calls.

7. The method of claim 6, wherein the first and second .NET languages are selected from the group consisting of:

C#;

C++; and

VB.NET.

8. The method of claim 6, further comprising:

generating Microsoft Intermediate Language based on the second .NET language classes, the calls to the .NET software developer kit class library, the second calls, the .NET language Open Foundation class library, and the .NET software developer kit class library.

9. The method of claim 6, further comprising:

generating Java bytecode based on the Java source code, the Java Open Foundation class library, and the Java developer kit class library; and

wherein the third Java classes are translated to the second .NET language classes based on the Java bytecode.

10. The method of claim 6, wherein the first calls comprise calls to at least one of the group consisting of:

object classes;

exception classes; and

string classes.

11. An apparatus comprising:

means for providing a Java developer kit class library comprising a plurality of first Java classes;

means for providing a Java Open Foundation class library comprising a plurality of second Java classes each containing one or more of the first Java classes;

means for providing a .NET software developer kit class library comprising a plurality of .NET classes;

means for providing a .NET language Open Foundation class library comprising a plurality of first .NET language classes each containing one or more of the .NET classes;

wherein each of the .NET language classes presents the same apparatus signature as one of the second Java classes;

means for receiving Java source code defining third Java classes, one or more first calls to one or more of the first Java classes, and one or more second calls to one or more of the second Java classes;

means for translating the third Java classes into second .NET language classes; and

means for translating the first calls to calls into the .NET software developer kit class library without modifying the second calls.

12. The apparatus of claim 11, wherein the first and second .NET languages are selected from the group consisting of:

C#;

C++; and

VB.NET.

13. The apparatus of claim 11, further comprising:

means for generating Microsoft Intermediate Language based on the second .NET language classes, the calls to the .NET software developer kit class library, the second calls, the .NET language Open Foundation class library, and the .NET software developer kit class library.

14. The apparatus of claim 11, further comprising:

means for generating Java bytecode based on the Java source code, the Java Open Foundation class library, and the Java developer kit class library; and

wherein the third Java classes are translated to the second .NET language classes based on the Java bytecode.

15. The apparatus of claim 11, wherein the first calls comprise calls to at least one of the group consisting of:

object classes;

exception classes; and

string classes.